:root {
  color-scheme: light;

  --page-bg: #f1f3f4;
  --surface: #ffffff;
  --surface-alt: #f8f9fa;
  --surface-strong: #1f1f1f;
  --text: #1c1c1c;
  --text-muted: #5f6368;
  --text-soft: #6b7280;
  --border: #d7d9dc;
  --brand: #008fc7;
  --brand-strong: #0077ad;
  --brand-accent: #00a9df;
  --brand-soft: #d8e8b0;
  --callout-bg: #e8f6f3;
  --footer-bg: #1c1c1c;
  --footer-text: #d3d9d8;
  --button-text: #ffffff;
  --board-bg: #ffffff;
  --board-text: #17232b;
  --board-muted: #5f6d72;
  --board-border: #d7d9dc;
  --platform-bg: #f7faf7;
  --platform-text: #17232b;
  --code-bg: #ffffff;
  --code-text: #173044;
  --shadow: 0 12px 32px rgba(60, 64, 67, 0.16);
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;

    --page-bg: #111111;
    --surface: #1f1f1f;
    --surface-alt: #282828;
    --surface-strong: #202124;
    --text: #f1f3f4;
    --text-muted: #b7bdc2;
    --text-soft: #c9d1d3;
    --border: #45484b;
    --brand: #2db6ea;
    --brand-strong: #1a9ed4;
    --brand-accent: #5bc8f7;
    --brand-soft: #cfe28a;
    --callout-bg: #163b3a;
    --footer-bg: #090909;
    --footer-text: #dfe9e7;
    --button-text: #0b1115;
    --board-bg: #182126;
    --board-text: #f4fbfd;
    --board-muted: #b9c8cc;
    --board-border: #46565c;
    --platform-bg: #2c383b;
    --platform-text: #f4fbfd;
    --code-bg: #131a1e;
    --code-text: #e6fbff;
    --shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--page-bg);
  font-family: "Segoe UI", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.55;
}

img {
  max-width: 100%;
}

a {
  color: inherit;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 20;
  padding: 10px 14px;
  color: var(--button-text);
  background: var(--brand);
  border-radius: 4px;
  box-shadow: var(--shadow);
  transform: translateY(-200%);
  transition: transform 0.2s ease;
  text-decoration: none;
  font-family: Arial, sans-serif;
  font-size: 13px;
  font-weight: 700;
}

.skip-link:focus {
  transform: translateY(0);
}

.shell {
  width: min(1160px, calc(100% - 48px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  z-index: 10;
  top: 0;
  background: color-mix(in srgb, var(--page-bg) 92%, transparent);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-family: Arial, sans-serif;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.02em;
  text-decoration: none;
}

.brand-logo {
  display: block;
  flex: 0 0 32px;
  width: 32px;
  height: 32px;
  max-width: 32px;
  max-height: 32px;
  object-fit: contain;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  font-family: Arial, sans-serif;
  font-size: 13px;
  font-weight: 700;
}

.nav-links a {
  text-decoration: none;
}

.nav-cta,
.button.primary {
  color: var(--button-text);
  background: var(--brand);
  border-color: var(--brand);
}

.nav-cta {
  padding: 9px 14px;
  border-radius: 3px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(390px, 0.9fr);
  align-items: center;
  gap: 72px;
  padding: 92px 0 110px;
}

.eyebrow {
  margin: 0 0 13px;
  color: var(--brand);
  font-family: Arial, sans-serif;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.05;
  color: var(--text);
}

h1 {
  max-width: 670px;
  font-size: clamp(48px, 6vw, 82px);
  letter-spacing: -0.045em;
}

h2 {
  font-size: clamp(32px, 4vw, 52px);
  letter-spacing: -0.035em;
}

h3 {
  font-size: 22px;
}

.hero-text {
  max-width: 570px;
  margin: 28px 0;
  color: var(--text-muted);
  font-size: 20px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-block;
  padding: 13px 18px;
  border: 1px solid var(--text);
  border-radius: 3px;
  font-family: Arial, sans-serif;
  font-size: 13px;
  font-weight: 800;
  text-decoration: none;
  transition: filter 0.2s ease, opacity 0.2s ease;
}

.button.secondary {
  color: var(--text);
  background: transparent;
  border-color: var(--border);
}

.button:hover,
.nav-links a:hover {
  filter: brightness(0.97);
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--brand-accent);
  outline-offset: 3px;
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 30px;
  color: var(--text-muted);
  font-family: Arial, sans-serif;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
}

.trust-row span::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin: 0 7px 1px 0;
  background: var(--brand-accent);
  border-radius: 50%;
}

.board-preview {
  padding: 20px;
  color: var(--board-text);
  background: var(--board-bg);
  border: 1px solid var(--board-border);
  border-radius: 4px;
  box-shadow: var(--shadow);
  transform: rotate(1.2deg);
}

.board-top {
  display: flex;
  justify-content: space-between;
  margin-bottom: 20px;
  font-family: Arial, sans-serif;
  font-size: 24px;
  font-weight: 800;
}

.board-top time {
  color: var(--board-muted);
  font-size: 18px;
}

.board-head,
.board-row {
  display: grid;
  grid-template-columns: 24px 48px minmax(0, 1fr) 64px 64px 64px;
  gap: 8px;
  align-items: center;
}

.board-head {
  padding: 0 0 8px;
  color: var(--board-muted);
  border-bottom: 1px solid var(--board-border);
  font-family: Arial, sans-serif;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
}

.board-head .stop-title {
  grid-column: 1 / 4;
  color: var(--board-text);
  font-size: 22px;
  line-height: 1;
  text-transform: none;
}

.board-row {
  min-height: 70px;
  border-bottom: 1px solid var(--board-border);
  font-family: Arial, sans-serif;
  font-size: 13px;
}

.board-row strong {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.board-row small {
  display: block;
  color: var(--board-muted);
  font-size: 10px;
  font-weight: 400;
}

.board-row i {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  color: var(--platform-text);
  background: var(--platform-bg);
  border-radius: 50%;
  font-style: normal;
  font-weight: 800;
}

.mode {
  color: var(--board-muted);
  display: grid;
  place-items: center;
  text-align: center;
}

.mode-icon {
  position: relative;
  display: block;
  width: 19px;
  height: 19px;
  border: 2px solid currentColor;
}

.mode-icon.bus {
  border-radius: 4px 4px 2px 2px;
}

.mode-icon.bus::before {
  position: absolute;
  top: 3px;
  right: 2px;
  left: 2px;
  height: 4px;
  background: currentColor;
  content: "";
}

.mode-icon.bus::after {
  position: absolute;
  right: 1px;
  bottom: -5px;
  left: 1px;
  height: 4px;
  border-right: 3px solid currentColor;
  border-left: 3px solid currentColor;
  content: "";
}

.mode-icon.tram {
  border-radius: 6px 6px 2px 2px;
}

.mode-icon.tram::before {
  position: absolute;
  top: 3px;
  right: 2px;
  left: 2px;
  height: 4px;
  background: currentColor;
  content: "";
}

.mode-icon.tram::after {
  position: absolute;
  top: -7px;
  left: 7px;
  width: 2px;
  height: 6px;
  background: currentColor;
  content: "";
}

.line {
  display: grid;
  place-items: center;
  width: 40px;
  height: 36px;
  border: 2px solid transparent;
  border-radius: 5px;
  font-size: 16px;
  font-weight: 900;
}

.yellow {
  color: #0047a6;
  background: #ffff50;
  border: 2px solid #0047a6;
}

.aqua {
  color: #00435c;
  background: var(--brand-accent);
}

.green {
  color: #006c93;
  background: var(--brand-soft);
}

.magenta {
  color: #ffffff;
  background: #c81b79;
}

.board-footer {
  display: flex;
  align-items: center;
  padding-top: 14px;
  color: var(--board-muted);
  font-family: Arial, sans-serif;
  font-size: 10px;
  font-weight: 700;
}

.page-label {
  white-space: nowrap;
}

.page-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  gap: 7px;
}

.page-progress {
  display: block;
  width: 88px;
  height: 10px;
  padding: 2px;
  overflow: hidden;
  border: 1px solid var(--board-text);
  border-radius: 8px;
}

.page-progress span {
  display: block;
  width: 54%;
  height: 100%;
  background: var(--brand-accent);
  border-radius: 5px;
}

.page-dot {
  display: block;
  width: 10px;
  height: 10px;
  border: 1px solid var(--board-text);
  border-radius: 50%;
}

.feature-band {
  color: #ffffff;
  background: var(--brand-strong);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 44px;
  padding: 60px 0;
}

.feature-grid article {
  border-top: 1px solid rgba(255, 255, 255, 0.22);
  padding-top: 18px;
}

.feature-number {
  display: block;
  margin-bottom: 16px;
  color: rgba(255, 255, 255, 0.7);
  font-family: Arial, sans-serif;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.feature-grid h2 {
  margin-bottom: 10px;
  color: #ffffff;
}

.feature-grid p {
  margin: 0;
  color: rgba(255, 255, 255, 0.92);
}

.content-section {
  padding: 100px 0;
}

.section-intro {
  max-width: 600px;
  margin-bottom: 48px;
}

.section-intro > p:last-child {
  color: var(--text-muted);
  font-size: 19px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px 32px;
}

.step {
  display: grid;
  grid-template-columns: 60px minmax(0, 1fr);
  gap: 20px;
  align-items: start;
  padding: 22px 0;
  border-top: 1px solid var(--border);
}

.step > span {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--brand-strong);
  font-family: Arial, sans-serif;
  font-size: 12px;
  font-weight: 800;
}

.step p,
.api-options p,
.install-note p,
.section-intro p {
  color: var(--text-muted);
}

.step h3 {
  margin-bottom: 8px;
}

.hacs-callout {
  margin-top: 28px;
  padding: 18px 22px;
  color: var(--text);
  background: var(--callout-bg);
  border-left: 4px solid var(--brand);
  border-radius: 4px;
}

.hacs-callout strong {
  font-family: Arial, sans-serif;
  font-size: 14px;
}

.hacs-callout p {
  margin: 8px 0 0;
  color: var(--text);
}

.dark-section {
  color: var(--text);
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.card-section {
  padding: 100px 0;
}

.light .eyebrow {
  color: var(--brand);
}

.config-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(260px, 0.9fr);
  gap: 42px;
  align-items: start;
}

.code-window {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.window-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  font-family: Arial, sans-serif;
  color: var(--text-muted);
}

.window-bar span {
  display: block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #d1d5db;
}

.window-bar span:nth-child(1) { background: #ff5f57; }
.window-bar span:nth-child(2) { background: #febc2e; }
.window-bar span:nth-child(3) { background: #28c840; }

.window-bar em {
  margin-left: auto;
  font-style: normal;
  font-size: 12px;
}

.code-window pre {
  margin: 0;
  padding: 20px 18px;
  overflow-x: auto;
  color: var(--code-text);
  background: var(--code-bg);
  font-size: 15px;
  line-height: 1.65;
}

.settings-list {
  display: grid;
  gap: 16px;
}

.settings-list div {
  display: grid;
  gap: 6px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}

.settings-list b {
  font-family: Arial, sans-serif;
  font-size: 14px;
}

.settings-list span {
  color: var(--text-muted);
}

.split-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
}

.split-section .section-intro {
  margin-bottom: 0;
}

.api-options {
  padding-top: 12px;
  color: var(--text-muted);
}

.api-options ul {
  margin: 14px 0 0;
  padding-left: 20px;
  line-height: 1.8;
}

.install-note {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-top: 60px;
  padding-bottom: 60px;
  border-top: 1px solid var(--border);
}

.footer {
  padding: 24px 0;
  color: var(--footer-text);
  background: var(--footer-bg);
  font-family: Arial, sans-serif;
  font-size: 12px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 20px;
}

.footer a {
  color: inherit;
  text-decoration: none;
}

@media (max-width: 840px) {
  .hero,
  .config-layout,
  .split-section {
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .hero {
    padding-top: 62px;
  }

  .feature-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .steps {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .shell {
    width: min(100% - 30px, 1160px);
  }

  .nav {
    min-height: 62px;
  }

  .nav-links a:not(.nav-cta) {
    display: none;
  }

  .hero {
    padding-bottom: 70px;
  }

  .hero-text {
    font-size: 18px;
  }

  .install-note,
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}